s'pose Share definition Flag Eye dialect spelling of "suppose", representing Southern US English. (Wikipedia has an arcticle on the subject "Eye dialect" for those who want to know more.) I s'pose this is an acceptable explanation. I s'pose two examples will be enough. s'pose by Katzura March 3, 2011 0 0 Get merch Get the s'pose mug. Buy Now — $32.95 See more merch